Patents by Inventor Malin Wang

Malin Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200201280
    Abstract: The present disclosure provides a control method for an electronically controlled servo mechanism as well as an apparatus and a robot thereof. The method is for an electronically controlled servo mechanism including a servo having a PI controller, which includes: obtaining related parameter(s) of the PI controller before tuning, where the related parameters includes a proportional coefficient and an integral coefficient; obtaining a current rotational angle of an output shaft of the servo, and calculating an angular deviation between the obtained current rotational angle and an expected rotational angle of an output shaft of the servo; and tuning the related parameter(s) of the PI controller based on the proportional coefficient, the integral coefficient, and the angular deviation. In such a manner, the parameter(s) of the PI controller are tuned to make it equivalent to a P controller, thereby avoiding the large oscillation caused by external interference.
    Type: Application
    Filed: September 25, 2019
    Publication date: June 25, 2020
    Inventors: Youjun Xiong, Xi Bai, Wenhua Fan, Malin Wang, Jianxin Pang
  • Publication number: 20200193027
    Abstract: A firmware upgrade method for a slave station of a robot communicates with a master station of the robot via an EtherCAT bus of the robot, includes: switching a work mode of the slave station to an upgrade mode in response to a firmware upgrade instruction, receiving a new firmware corresponding to this firmware upgrade via the EtherCAT bus, storing the new firmware in a second storage area of a flash memory of the slave station, restarting the slave station after the new firmware is received, and copying the new firmware stored in the second storage area to a first storage area of the flash memory and executing the new firmware in the first storage area when the slave station is started. A slave station of the robot and a machine readable storage medium are also provided.
    Type: Application
    Filed: September 20, 2019
    Publication date: June 18, 2020
    Inventors: MALIN WANG, Youjun Xiong, Xi Bai, Wenhua Fan, Sheng Zhou, Jianxin Pang
  • Publication number: 20200195004
    Abstract: A current protection circuit for a high voltage system includes: a power supply module to supply power to a load through a high voltage bus and a low voltage bus; a detection module connected to the high voltage bus and used to detect a value of current flowing through the high voltage bus; a signal processing module electrically connected to the detection module and used to amplify the current flowing through the high voltage bus; and a control module electrically connected to the signal processing module, the power supply module, and the load, and used to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold.
    Type: Application
    Filed: August 8, 2019
    Publication date: June 18, 2020
    Inventors: Youjun Xiong, Sheng Zhou, Malin Wang, Wenhua Fan, Jianxin Pang
  • Patent number: 10685672
    Abstract: The present disclosure provides a linearity detecting method and apparatus for a servo position sensor, and a robot with the same. The method includes: collecting and saving an output angle of the servo under test; analyzing the output angle to obtain a relationship curve of angle and time of the servo under test to rotate for one turn; extracting angle information of a starting point to an ending point of the output angle corresponding to the position sensor in the servo under test based on the relationship curve of angle and time to obtain valid angle data; and determining whether the output angle corresponding to the position sensor is linear based on the valid angle data. The present disclosure can solve the problem that an external sensor and a fixture are required when detecting the linearity of the sensor which causes complicated operation, high detection cost, and low detection efficiency.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 16, 2020
    Assignee: UBTECH ROBOTICS CORP
    Inventors: Youjun Xiong, Lifu Zhang, Wenhua Fan, Malin Wang
  • Patent number: 10635075
    Abstract: The present disclosure relates to a method for controlling zero-return of a servo of a robot, and a servo and a robot with enhanced zero-return. The method includes: outputting an activation command to a motor, and reading a default zero-point of the motor (w1) and a default zero-point of an output shaft of the speed reducer (w2). The output shaft of the motor (w1) is driven to return until the default zero-point of the output shaft of the speed reducer (w2) is the same with the current position of the output shaft of the speed reducer (w4) in response to the default zero-point of an output shaft of the speed reducer (w2) being not the same with the current position of the output shaft of the speed reducer (w4).
    Type: Grant
    Filed: September 29, 2018
    Date of Patent: April 28, 2020
    Assignee: UBTECH ROBOTICS CORP
    Inventors: Youjun Xiong, Malin Wang, Wenhua Fan, Sheng Zhou
  • Publication number: 20190198048
    Abstract: The present disclosure provides a linearity detecting method and apparatus for a servo position sensor, and a robot with the same. The method includes: collecting and saving m output angle of the servo under test; analyzing the output angle to obtain a relationship curve of angle and time of the servo under test to rotate for one turn; extracting angle information of a starting point to an ending point of the output angle corresponding to the position sensor in the servo under test based on the relationship curve of angle and time to obtain valid angle data; and determining whether the output angle corresponding to the position sensor is linear based on the valid angle data. The present disclosure can solve the problem that an external sensor and a fixture are required when detecting the linearity of the sensor which causes complicated operation, high detection cost, and low detection efficiency.
    Type: Application
    Filed: October 18, 2018
    Publication date: June 27, 2019
    Inventors: Youjun Xiong, Lifu Zhang, Wenhua Fan, Malin Wang
  • Publication number: 20190163159
    Abstract: The present disclosure relates to a method for controlling zero-return of a servo of a robot, and a servo and a robot with enhanced zero-return. The method includes: outputting an activation command to a motor, and reading a default zero-point of the motor (w1) and a default zero-point of an output shaft of the speed reducer (w2). The output shaft of the motor (w1) is driven to return until the default zero-point of the output shaft of the speed reducer (w2) is the same with the current position of the output shaft of the speed reducer (w4) in response to the default zero-point of an output shaft of the speed reducer (w2) being not the same with the current position of the output shaft of the speed reducer (w4).
    Type: Application
    Filed: September 29, 2018
    Publication date: May 30, 2019
    Inventors: Youjun Xiong, Malin Wang, Wenhua Fan, Sheng Zhou